From: Dmitry Kasatkin Date: Mon, 23 Jun 2014 17:32:56 +0000 (+0300) Subject: ima: fix fallback to use new_sync_read() X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=27cd1fc3ae5374a4a86662c67033f15ef27b2461;p=GitHub%2FLineageOS%2FG12%2Fandroid_kernel_amlogic_linux-4.9.git ima: fix fallback to use new_sync_read() 3.16 commit aad4f8bb42af06371aa0e85bf0cd9d52c0494985 'switch simple generic_file_aio_read() users to ->read_iter()' replaced ->aio_read with ->read_iter in most of the file systems and introduced new_sync_read() as a replacement for do_sync_read(). Most of file systems set '->read' and ima_kernel_read is not affected. When ->read is not set, this patch adopts fallback call changes from the vfs_read. Signed-off-by: Dmitry Kasatkin Signed-off-by: Mimi Zohar Cc: 3.16+ --- diff --git a/security/integrity/ima/ima_crypto.c b/security/integrity/ima/ima_crypto.c index 1178b307d562..3b26472fbf0a 100644 --- a/security/integrity/ima/ima_crypto.c +++ b/security/integrity/ima/ima_crypto.c @@ -80,19 +80,19 @@ static int ima_kernel_read(struct file *file, loff_t offset, { mm_segment_t old_fs; char __user *buf = addr; - ssize_t ret; + ssize_t ret = -EINVAL; if (!(file->f_mode & FMODE_READ)) return -EBADF; - if (!file->f_op->read && !file->f_op->aio_read) - return -EINVAL; old_fs = get_fs(); set_fs(get_ds()); if (file->f_op->read) ret = file->f_op->read(file, buf, count, &offset); - else + else if (file->f_op->aio_read) ret = do_sync_read(file, buf, count, &offset); + else if (file->f_op->read_iter) + ret = new_sync_read(file, buf, count, &offset); set_fs(old_fs); return ret; }